5561728956168 has 128 divisors (see below), whose sum is σ = 17337024000000. Its totient is φ = 1444457848320.

The previous prime is 5561728956167. The next prime is 5561728956169. The reversal of 5561728956168 is 8616598271655.

It is an interprime number because it is at equal distance from previous prime (5561728956167) and next prime (5561728956169).

It is not an unprimeable number, because it can be changed into a prime (5561728956167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18625708 + ... + 18921956.

It is an arithmetic number, because the mean of its divisors is an integer number (135445500000).

Almost surely, 2^{5561728956168} is an apocalyptic number.

It is an amenable number.

5561728956168 is an abundant number, since it is smaller than the sum of its proper divisors (11775295043832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561728956168 is a wasteful number, since it uses less digits than its factorization.

5561728956168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306435 (or 306431 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 69.

The spelling of 5561728956168 in words is "five trillion, five hundred sixty-one billion, seven hundred twenty-eight million, nine hundred fifty-six thousand, one hundred sixty-eight".